NEC MH4000, User Manual

Page: 19 / 204

2-4
Features
System Feature Summary
The following provides a summary of the system
features:
Feature Description
Modular board set System is intended for use with a modular board set
based on Pentium Pro processor technology; from one to
four processors and up to 4 GB of memory.
Add-in board support Rail and back panel slots support up to 10 add-in boards
(four EISA and six PCI).
3 ½-inch diskette drive 3 ½-inch diskette drive is externally accessible.
One location for a 3 ½-inch
removable media device
One externally accessible 3 ½-inch half-height bay is
available.
Six locations for 3 ½-inch
SCSI-2 hard drives The hard disk drive bay can hold six 3 ½-inch hot-
swappable ultra wide SCSI-2 hard drives. The bay is
secured behind a lockable metal EMI door; drives can be
swapped in or out of the system without powering it
down, if a Redundant Array of Independent Disks (RAID)
controller module is installed. The array of drives allows
easy setup of optional RAID applications.
Hot swap-capable backplane A hot swap-capable backplane is part of each 3 ½-inch
drive bay assembly for SCSI drives. The backplane is
designed for wide ultra SCSI-2 devices that use the
industry standard 80-pin Single Connector Attach (SCA)
connector. The backplane consists of two rows of three
drive connectors.
Three locations for 5 1/4-inch
removable media devices Three externally accessible 5 1/4-inch half-height bays
are available for diskette, CD-ROM, and/or tape drives.
Power supply From two to three 330 Watt autoranging power supplies
are easily removed/installed for service. In a three-
supply system, the third supply is redundant.
Hot swap-capable cooling
fans Each power supply has two integral cooling fans. Six
more fans provide cooling for boards and drives.